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BI 203 Human Anatomy & Physiology II Snakes don’t micturate, so why do we? What goes in must come out… Undigestible food, bile (bilirubin), dead cells, bacteria = What about dietary fluids? What about cellular wastes? What picks up cellular wastes (think transport)? What other system helps clean fluids leaking from blood? How is blood cleaned? BI 203 Human Anatomy & Physiology II What are the functions of the Urinary system? •___________ (digestive or metabolic?) •___________ (loss of > than a “big slam”/day What are sources for the other 40% lost daily? •___________________ What other mechanism(s) can regulate pH? •___________________ •________________________________… remember erythropoeitin? BI 203 Human Anatomy & Physiology II What are the main organs of the Urinary system? ? Main organs: Pair of ____________ (nephros or renal) For review: ? ? ? ? BI 203 Human Anatomy & Physiology II Gross anatomy! BI 203 Human Anatomy & Physiology II What else is there besides kidneys? ____________ = tubes carrying urine to bladder ____________ = storage organ for urine ____________ = tube for urine to exit body “Plumbing” differs between genders. From the kidneys down to the urinary bladder anatomy is the same. However, the ________ are different. BI 203 Human Anatomy & Physiology II Take 5!!! Cystitis is inflammation of the urinary bladder that typically results from infections, and urinary bladder infections often occur when bacteria from outside the body enter the bladder. Are males or females more prone to urinary bladder infections? Discuss with your Why? What medical neighbor and predict procedure/intervention can lead to an answer cystitis? BI 203 Human Anatomy & Physiology II Where can one find a kidney? Location: Size: Surrounded by connective tissue (__________) Protected by renal fat pad (__________) BI 203 Human Anatomy & Physiology II What are the anatomical details of the kidney? __________ = entrance/exit __________ = expanded area of ureters __________ = branches or funnels __________ = bumps or “teats” __________ = area of medulla BI 203 Human Anatomy & Physiology II What are the anatomical details of the kidney? Nephrons = __________ per kidney (1,300,000) ____________ can maintain life _________ will follow without medical intervention Flow chart: BI 203 Human Anatomy & Physiology II What are the anatomical details of the kidney? 3 5 2 7 1 4 8 6 9 BI 203 Human Anatomy & Physiology II Where does filtration take place? Renal corpuscle = Bowman’s capsule = BI 203 Human Anatomy & Physiology II Where does filtration take place? Filtration membrane = __________ = openings that allow water and small molecules to pass through easily __________ = cells that surround glomerulus; have filtration slits BI 203 Human Anatomy & Physiology II Take 5!!! Hemoglobin has a smaller diameter than albumin, but very little hemoglobin passes from the blood into the filtrate. Explain why. Under what circumstances would large amounts of hemoglobin enter the filtrate? Discuss with your neighbor and predict an answer. BI 203 Human Anatomy & Physiology II What is the route of blood flow through the kidney? Characterize blood entering & exiting the kidney. Blood enters via renal artery at the renal hilum. Artery branches towards renal papillae. More branches form interlobar and interlobular a. BI 203 Human Anatomy & Physiology II What is the route of blood flow through the kidney? Afferent arteriole to glomerulus to Efferent arteriole to peritubular capillaries to vasa recta, then back out BI 203 Human Anatomy & Physiology II What is the route of blood flow through the kidney? Drains into the interlobular veins eventually into interlobar veins and then eventually into Renal vein BI 203 Human Anatomy & Physiology II What other anatomy is significant? Transitional epithelium lines the _______ & ____________ Stratified & Stretchy Contract =